@article{MT_2009_12_2_a8,
     author = {V. G. Puzarenko},
     title = {On a~semilattice of numberings},
     journal = {Matemati\v{c}eskie trudy},
     pages = {170--209},
     publisher = {mathdoc},
     volume = {12},
     number = {2},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_2009_12_2_a8/}
}